[PATCH 1/2] Add SEND_ACTION control interface command for hostapd

Raphaël Mélotte raphael.melotte at mind.be
Fri Dec 2 08:02:41 PST 2022

Thanks for the review!

On 12/2/22 14:08, Jouni Malinen wrote:
> I'm fine with doing this kind of things for testing purposes under the
> CONFIG_TESTING_OPTIONS build parameter, but providing a mechanism for
> sending practically any kind of Action frame in a production build feels
> problematic. There might be somewhat reduced privilege requirements for
> the hostapd control interfaces compared to being able to use
> NL80211_CMD_FRAME directly.

Indeed, it makes sense..
In our case we needed it outside CONFIG_TESTING_OPTIONS, so I'll abandon this approach.

> In addition, sending some Action frames
> without hostapd having the internal context on the state can result in
> unexpected behavior when processing either the TX status callback or a
> response from a STA to such an Action frame.

In our case we need to be able to send a DELBA frame to a station at an arbitrary point in time (the point is to tear down any existing block ack agreement for a very short period of time - on kernels that don't support NL80211_TID_CONFIG_ATTR_AMPDU_CTRL yet).

Would a new command to send a DELBA frame to a specific station have more chances to be accepted?

Kind regards,


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